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cksum: make the output formatting match GNU

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This commit is contained in:
Vardhan Patil 2023-12-30 15:59:29 +05:30
parent 231987b109
commit 037073d852
1 changed files with 24 additions and 13 deletions
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37
src/uu/cksum/src/cksum.rs
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@ -111,6 +111,7 @@ struct Options {
digest: Box<dyn Digest + 'static>,
output_bits: usize,
untagged: bool,
length: Option<usize>,
}
/// Calculate checksum
@ -174,7 +175,12 @@ where
(ALGORITHM_OPTIONS_CRC, true) => println!("{sum} {sz}"),
(ALGORITHM_OPTIONS_CRC, false) => println!("{sum} {sz} {}", filename.display()),
(ALGORITHM_OPTIONS_BLAKE2B, _) if !options.untagged => {
println!("BLAKE2b ({}) = {sum}", filename.display());
if let Some(length) = options.length {
// Multiply by 8 here, as we want to print the length in bits.
println!("BLAKE2b-{} ({}) = {sum}", length * 8, filename.display());
} else {
println!("BLAKE2b ({}) = {sum}", filename.display());
}
}
_ => {
if options.untagged {
@ -244,24 +250,28 @@ pub fn uumain(args: impl uucore::Args) -> UResult<()> {
let input_length = matches.get_one::<usize>(options::LENGTH);
let length = if let Some(length) = input_length {
if algo_name != ALGORITHM_OPTIONS_BLAKE2B {
return Err(io::Error::new(
io::ErrorKind::InvalidInput,
"--length is only supported with --algorithm=blake2b",
)
.into());
}
if length % 8 != 0 {
// GNU's implementation seem to use these quotation marks
// in their error messages, so we do the same.
uucore::show_error!("invalid length: \u{2018}{length}\u{2019}");
return Err(io::Error::new(
io::ErrorKind::InvalidInput,
// TODO: Fix formatting for this error message
// GNU has the executable path/name on both lines
format!("invalid length {length}\nlength is not a multiple of 8"),
"length is not a multiple of 8",
)
.into());
}
}
if algo_name != ALGORITHM_OPTIONS_BLAKE2B {
return Err(io::Error::new(
io::ErrorKind::InvalidInput,
"--length is only supported with --algorithm=blake2b",
)
.into());
}
// Divide by 8, as our blake2b implementation expects bytes
// instead of bits.
Some(length / 8)
} else {
None
@ -273,6 +283,7 @@ pub fn uumain(args: impl uucore::Args) -> UResult<()> {
algo_name: name,
digest: algo,
output_bits: bits,
length,
untagged: matches.get_flag(options::UNTAGGED),
};